title: Suppression of Rayleigh-scattering-induced noise in OEOs.
abstract: Optoelectronic oscillators (OEOs) are hybrid RF-photonic devices that promise to be environmentally robust high-frequency RF sources with very low phase noise. Previously, we showed that Rayleigh-scattering-induced noise in optical fibers coupled with amplitude-to-phase noise conversion in photodetectors and amplifiers leads to fiber-length-dependent noise in OEOs. In this work, we report on two methods for the suppression of this fiber-length-dependent noise: altering the amplitude-dependent phase delay of the OEO loops and suppressing the Rayleigh-scattering-induced noise in optical fibers. We report a 20 dB reduction in the flicker phase noise of a 6 km OEO via these suppression techniques.
authors.forename: Olukayode
authors.initials: O
authors.lastname: Okusaga
authors.forename: James P
authors.initials: JP
authors.lastname: Cahill
authors.forename: Andrew
authors.initials: A
authors.lastname: Docherty
authors.forename: Curtis R
authors.initials: CR
authors.lastname: Menyuk
authors.forename: Weimin
authors.initials: W
authors.lastname: Zhou
authors.forename: Gary M
authors.initials: GM
authors.lastname: Carter